Multihop Amplified Relaying Optical Network to Improve Transmission Signal Quality

Optical amplify-and-forward (OAF) relaying technique can amplify and filter the attenuated optical signal in optical domain, and thus is regarded as a simple way to extend the transmission distance of free-space optical (FSO) communication systems. The data transmitted over the optical wireless communication channel may fade due to turbulence effect, scintillation effects etc., In long distance communication, the transmitted data is affected by inter symbol interference. The ISI is removed by introducing the relaying network with duo binary scheme. The relay network with proposed hybrid amplifier and duobinary signaling scheme reduces Bit Error Rate and improves Quality factor .